Prepare your flax egg by mixing together the ground flax and water and set aside to thicken.
Measure out the soy milk and add in the vinegar. Stir together and set aside for 10. This will act as our buttermilk.
In a large mixing bowl, whisk together all dry ingredients.
Add in all remaining wet ingredients, including the milk and flax egg once thickened.
I usually use just 2 tablespoons of sugar since I add maple syrup on top, but feel free to use the full 4 tablespoons if you like them sweeter!
Heat and lightly grease a waffle iron. Mine has 5 settings, I usually put it somewhere between the 3rd and 4th. Once it's ready, add the batter and close the lid. Let cook until it beeps or the light turns green.
Remove from the waffle iron and transfer to a cooling rack. Repeat until all batter has been used. You can also keep them warm in an oven set to about 150 degrees Fahrenheit.
Serve with berries, maple syrup, coconut whipped cream or anything else you like!